| A | B |
| hormone | a chemical substance that is secreted by one cell, travels through the bloodstream, and causes a reaction in another cell |
| exocrine glands | tissues that release substances into ducts that lead to other organs or out of the body |
| endocrine glands | tissues that release hormones into the bloodstream |
| target cells | cells that have a receptor for a particular hormone |
| steroid hormones | lipid soluable hormone that can enter the cell and directly affect the DNA |
| non-steroid hormone | protein or amino acid based hormone that bind to cell receptors and trigger a reaction within a cell |
| hypothalamus | a structure in the center of the brain which produces and releases hormone |
| anterior pituitary | front lobe of the gland which produces hormones in response to releasing factors |
| posterior pituitary | back lobe of the gland which stores and releases hormones produced by the hypothalamus |
| thymus | gland located below the sternum which matures certain white blood cells |
| adrenal gland | gland located on the kidney which produces stress and sex hormones |
| thyroid | gland located below the larynx which produces hormones that regulate metabolism and blood calcium levels |
| testes | gland located in the scrotal sac of males which produces hormones to regulate sperm production |
| ovaries | gland located in the pelvic cavity of females which produce hormones to regulate egg production, menstruation and pregnancy |
| parathyroid | small glands on the posterior of the thyroid which regulate blood calcium levels |
| pancreas | gland located behind the stomach which produces hormones for blood sugar control |
| pineal | gland in the posterior portion of the brain which produces melatonin |